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- /* Definitions of target machine for GNU compiler. Iris version 5.
- Copyright (C) 1993, 1995 Free Software Foundation, Inc.
-
- This file is part of GNU CC.
-
- GNU CC is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- GNU CC is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GNU CC; see the file COPYING. If not, write to
- the Free Software Foundation, 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
- #ifndef TARGET_DEFAULT
- #define TARGET_DEFAULT MASK_ABICALLS
- #endif
- #define ABICALLS_ASM_OP ".option pic2"
-
- #include "mips/iris4.h"
-
- /* Irix 5 doesn't use COFF, so disable special COFF handling in collect2.c. */
- #undef OBJECT_FORMAT_COFF
-
- /* ??? This is correct, but not very useful, because there is no file that
- uses this macro. */
- /* ??? The best way to handle global constructors under ELF is to use .init
- and .fini sections. Unfortunately, there is apparently no way to get
- the Irix 5.x (x <= 2) assembler to create these sections. So we instead
- use collect. The linker can create these sections via -init and -fini
- options, but using this would require modifying how crtstuff works, and
- I will leave that for another time (or someone else). */
- #define OBJECT_FORMAT_ELF
- #define HAS_INIT_SECTION
- #define LD_INIT_SWITCH "-init"
- #define LD_FINI_SWITCH "-fini"
-
- /* Specify wchar_t types. */
- #undef WCHAR_TYPE
- #undef WCHAR_TYPE_SIZE
- #undef MAX_WCHAR_TYPE_SIZE
-
- #define WCHAR_TYPE "long int"
- #define WCHAR_TYPE_SIZE LONG_TYPE_SIZE
- #define MAX_WCHAR_TYPE_SIZE MAX_LONG_TYPE_SIZE
-
- /* ??? _MIPS_SIM and _MIPS_SZPTR should eventually depend on options when
- options for them exist. */
-
- #undef CPP_PREDEFINES
- #define CPP_PREDEFINES \
- "-Dunix -Dmips -Dsgi -Dhost_mips -DMIPSEB -D_MIPSEB -DSYSTYPE_SVR4 \
- -D_SVR4_SOURCE -D_MODERN_C -D__DSO__ \
- -D_MIPS_SIM=_MIPS_SIM_ABI32 -D_MIPS_SZPTR=32 \
- -Asystem(unix) -Asystem(svr4) -Acpu(mips) -Amachine(sgi)"
-
- #undef CPP_SPEC
- #define CPP_SPEC "\
- %{!ansi:-D__EXTENSIONS__ -D_SGI_SOURCE -D_LONGLONG} \
- %{.cc: -D_LANGUAGE_C_PLUS_PLUS} \
- %{.cxx: -D_LANGUAGE_C_PLUS_PLUS} \
- %{.C: -D_LANGUAGE_C_PLUS_PLUS} \
- %{.m: -D_LANGUAGE_OBJECTIVE_C -D_LANGUAGE_C} \
- %{.S: -D_LANGUAGE_ASSEMBLY %{!ansi:-DLANGUAGE_ASSEMBLY}} \
- %{.s: -D_LANGUAGE_ASSEMBLY %{!ansi:-DLANGUAGE_ASSEMBLY}} \
- %{!.S:%{!.s: %{!.cc: %{!.cxx: %{!.C: %{!.m: -D_LANGUAGE_C %{!ansi:-DLANGUAGE_C}}}}}}}\
- %{!mfp64: -D_MIPS_FPSET=16}%{mfp64: -D_MIPS_FPSET=32} \
- %{mips1: -D_MIPS_ISA=_MIPS_ISA_MIPS1} \
- %{mips2: -D_MIPS_ISA=_MIPS_ISA_MIPS2} \
- %{mips3: -D_MIPS_ISA=_MIPS_ISA_MIPS3} \
- %{!mips1: %{!mips2: %{!mips3: -D_MIPS_ISA=_MIPS_ISA_MIPS1}}} \
- %{!mint64: -D_MIPS_SZINT=32}%{mint64: -D_MIPS_SZINT=64} \
- %{!mlong64: -D_MIPS_SZLONG=32}%{mlong64: -D_MIPS_SZLONG=64} \
- %{mlong64:-D__SIZE_TYPE__=long\\ unsigned\\ int -D__PTRDIFF_TYPE__=long\\ int} \
- %{!mlong64:-D__SIZE_TYPE__=unsigned\\ int -D__PTRDIFF_TYPE__=int} \
- %{mips3:-U__mips -D__mips=3} \
- %{EB:-UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__ -D_MIPSEB -D__MIPSEB -D__MIPSEB__ %{!ansi:-DMIPSEB}} \
- %{EL:-UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__ -D_MIPSEL -D__MIPSEL -D__MIPSEL__ %{!ansi:-DMIPSEL}}"
-
- #undef LINK_SPEC
- #define LINK_SPEC "\
- %{G*} %{EB} %{EL} %{mips1} %{mips2} %{mips3} \
- %{bestGnum} %{shared} %{non_shared} \
- %{call_shared} %{no_archive} %{exact_version} \
- %{!shared:%{!non_shared:%{!call_shared: -call_shared -no_unresolved}}} \
- -_SYSTYPE_SVR4"
-
- /* We now support shared libraries. */
- #undef STARTFILE_SPEC
- #define STARTFILE_SPEC \
- "%{!shared:%{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s libprof1.a%s}%{!p:crt1.o%s}}}"
-
- #undef LIB_SPEC
- #define LIB_SPEC "%{!shared:%{p:-lprof1} %{pg:-lprof1} -lc}"
-
- #undef ENDFILE_SPEC
- #define ENDFILE_SPEC "%{!shared:crtn.o%s}"
-
- /* We do not want to run mips-tfile! */
- #undef ASM_FINAL_SPEC
-
- /* The system header files are C++ aware. */
- /* ??? Unfortunately, most but not all of the headers are C++ aware.
- Specifically, curses.h is not, and libg++ won't build because of it
- if this is defined. On the other hand, SGI has C++ packages with
- header files in /usr/include, and they won't work unless this is
- defined. We need some way to fix just those files that need fixing. */
- /* #define NO_IMPLICIT_EXTERN_C 1 */
-
- /* We don't support debugging info for now. */
- #undef DBX_DEBUGGING_INFO
- #undef SDB_DEBUGGING_INFO
- #undef MIPS_DEBUGGING_INFO
-
- #undef MACHINE_TYPE
- #define MACHINE_TYPE "SGI running IRIX 5.x"
- #undef NO_DOLLAR_IN_LABEL
-
- /* -G is incompatible with -KPIC which is the default, so only allow objects
- in the small data section if the user explicitly asks for it. */
- #undef MIPS_DEFAULT_GVALUE
- #define MIPS_DEFAULT_GVALUE 0
-
- /* In Irix 5, we must output a `.global name .text' directive for every used
- but undefined function. If we don't, the linker may perform an optimization
- (skipping over the insns that set $gp) when it is unsafe. This is used
- indirectly by ASM_OUTPUT_EXTERNAL. */
- #define ASM_OUTPUT_UNDEF_FUNCTION(FILE, NAME) \
- do { \
- fputs ("\t.globl ", FILE); \
- assemble_name (FILE, NAME); \
- fputs (" .text\n", FILE); \
- } while (0)
-
- /* Also do this for libcalls. */
- #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
- mips_output_external_libcall (FILE, XSTR (FUN, 0))
-
- /* This does for functions what ASM_DECLARE_OBJECT_NAME does for variables.
- This is used indirectly by ASM_OUTPUT_EXTERNAL. */
- #define ASM_DECLARE_FUNCTION_SIZE(STREAM, NAME, DECL) \
- do { \
- tree name_tree = get_identifier (NAME); \
- TREE_ASM_WRITTEN (name_tree) = 1; \
- } while (0)
-